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dc.contributor.authorNATH, Ren_US
dc.contributor.authorMAHAJAN, AVen_US
dc.contributor.authorBUTTGEN, Nen_US
dc.contributor.authorKEGLER, Cen_US
dc.contributor.authorHEMBERGER, Jen_US
dc.contributor.authorLOIDL, Aen_US
dc.date.accessioned2011-08-03T22:53:41Zen_US
dc.date.accessioned2011-12-26T12:54:25Zen_US
dc.date.accessioned2011-12-27T05:42:19Z
dc.date.available2011-08-03T22:53:41Zen_US
dc.date.available2011-12-26T12:54:25Zen_US
dc.date.available2011-12-27T05:42:19Z
dc.date.issued2006en_US
dc.identifier.citationJOURNAL OF PHYSICS-CONDENSED MATTER, 18(17), 4285-4294en_US
dc.identifier.issn0953-8984en_US
dc.identifier.urihttp://dx.doi.org/10.1088/0953-8984/18/17/015en_US
dc.identifier.urihttp://dspace.library.iitb.ac.in/xmlui/handle/10054/9165en_US
dc.identifier.urihttp://hdl.handle.net/10054/9165
dc.description.abstractThe magnetic properties of Na2CuP2O7 were investigated by means of P-31 nuclear magnetic resonance (NMR), magnetic susceptibility, and heat capacity measurements. We report the 31P NMR shift, the spin-lattice (1/T-1), and spin spin (1/T-2) relaxation rate data as a function of temperature T. The temperature dependence of the NMR shift K(T) is well described by the S = 1/2 square lattice Heisenberg antiferromagnetic model with an intraplanar exchange of J/k(B) similar or equal to 18 +/- 2 K and a hyperfine coupling A = 3533 +/- 185 Oe/mu B. The P-31 NMR spectrum was found to broaden abruptly below T similar to 10 K, signifying some kind of transition. However, no anomaly was noticed in the bulk susceptibility data down to 1.8 K. The heat capacity appears to have a weak maximum around 10 K. With decrease in temperature, the spin-lattice relaxation rate 1/T-1 decreases monotonically and appears to agree well with the high temperature series expansion expression for a S = 1/2 2D square lattice.en_US
dc.language.isoenen_US
dc.publisherIOP PUBLISHING LTDen_US
dc.subjectNuclear Magnetic-Relaxationen_US
dc.subjectQuantum Antiferromagnetsen_US
dc.subjectGround-Statesen_US
dc.subjectSusceptibilityen_US
dc.subjectLa2cuo4en_US
dc.subjectKcuf3en_US
dc.titleP-31 NMR study of Na2CuP2O7: an S=1/2 two dimensional Heisenberg antiferromagnetic systemen_US
dc.typeArticleen_US


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